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Latest Solana Blockhash Lookup
x402
Latest Solana Blockhash Lookup is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-29).
Returns the latest Solana blockhash and its validity duration (last-valid block height) via a pay-per-call x402 endpoint
Price / call$0.002
Success—
StatusUnknown
How this service works
Latest Solana blockhash and how long it stays valid — Genesis402 / UnyKorn Operator Network
Output
Returns a JSON object with ok=true, the blockhash type identifier ('solana-blockhash'), a payment receipt containing the transaction hash, USD amount paid, and a receipt ID, plus a generated_at ISO8601 timestamp. The blockhash value and last-valid block height are included in the response payload for use in transaction construction.
Example use cases
Build and sign a Solana transaction
“I'm about to construct and sign a Solana transaction — can you grab the latest blockhash and tell me how long it stays valid so I can include it in the transaction?”
Check blockhash freshness before submission
“Before I submit this Solana transaction, can you fetch the current blockhash and confirm how many more blocks it'll be valid for?”
Automate Solana transaction pipeline
“My agent needs to automatically fetch a fresh Solana blockhash every time it prepares a new transaction — can you get the latest one and its expiry right now?”
Technical details
Endpoint
POSThttps://twin.unykorn.org/solana-blockhash?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fresh, authoritative Solana blockhash in a pay-per-call context without managing your own Solana RPC node. Ideal for AI agents or automated pipelines that occasionally need a blockhash on demand and want a simple REST interface with x402 micropayment billing rather than a persistent WebSocket or full RPC connection.
Side effects
- Payment failure — x402 payment not accepted or insufficient funds causes a 402 response
- Network or RPC error — Solana RPC node unreachable returns an error response
- Stale result — blockhash returned may expire quickly (~150 blocks, ~60–90 seconds) if not used promptly
- Invalid request body — malformed params object causes a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "solana-blockhash",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.25,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}Tags
x402
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